Class: Megatest::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/megatest/runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/megatest/runner.rb', line 7

def initialize(config)
  @config = config
end

Instance Method Details

#execute(test_case) ⇒ Object 



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# File 'lib/megatest/runner.rb', line 11

def execute(test_case)
  if test_case.tag(:isolated)
    isolate(test_case)
  else
    run(test_case)
  end
end

#isolate(test_case) ⇒ Object 



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# File 'lib/megatest/runner.rb', line 20

def isolate(test_case)
  read, write = IO.pipe.each(&:binmode)
  pid = Process.fork do
    read.close
    result = run(test_case)
    Marshal.dump(result, write)
    write.close
    # We don't want to run at_exit hooks the app may have
    # installed.
    Process.exit!(0)
  end
  write.close
  result = begin
    Marshal.load(read)
  rescue EOFError
    TestCaseResult.new(test_case).lost
  end
  Process.wait(pid)
  result
end

#recursive_callbacks(callbacks, &block) ⇒ Object 



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# File 'lib/megatest/runner.rb', line 111

def recursive_callbacks(callbacks, &block)
  if callback = callbacks.pop
    callback.call(-> { recursive_callbacks(callbacks, &block) })
  else
    yield
  end
end

#run(test_case) ⇒ Object 



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# File 'lib/megatest/runner.rb', line 63

def run(test_case)
  result = TestCaseResult.new(test_case)
  runtime = Runtime.new(@config, test_case, result)
  instance = test_case.klass.new(runtime)

  # We always reset the seed before running any test as to have the most consistent
  # result as possible, especially on retries.
  Random.srand(@config.seed)

  result.record_time do
    ran = false
    failed = false
    recursive_callbacks(test_case.around_callbacks) do
      ran = true
      return result if runtime.record_failures { instance.before_setup }

      test_case.each_setup_callback do |callback|
        failed ||= runtime.record_failures(downlevel: 2) { instance.instance_exec(&callback) }
      end
      failed ||= runtime.record_failures { instance.setup }
      failed ||= runtime.record_failures { instance.after_setup }

      failed ||= test_case.execute(runtime, instance)

      result.ensure_assertions unless @config.minitest_compatibility
    ensure
      runtime.teardown

      runtime.record_failures do
        instance.before_teardown
      end
      test_case.each_teardown_callback do |callback|
        runtime.record_failures(downlevel: 2) do
          instance.instance_exec(&callback)
        end
      end
      runtime.record_failures do
        instance.teardown
      end
      runtime.record_failures do
        instance.after_teardown
      end
    end

    result.did_not_run("Test wasn't run. Did an around block failed to yield?") unless ran
  end
end